ShurTrax Traction Weight

Does anybody have any experience with the ShurTrax Traction Weight?
I saw it advertised on the autoanything site under truck bed accessories - traction systems. The reviews made it sound pretty good, but I'd like to hear from someone at TacomaWorld, you'e the ones I trust! Thanks for any info.

 

I thought about getting one myself, but the $100 price tag is what's holding me back. I really wanted it with the stock tires, but once I replaced them things were better. In fact, I didn't bother with any weight in the bed last winter. Just put it in 4wd when needed.

If you can find a good deal on I'd get it. Sand bags slide around unless you strap them down or box them in.